Start moving the code of addStock to the view. Try not to use widget code on the presenter. Then create an interface and implement in the presenter: class SomeViewHandlers { void deleteStock(Stock code); } You already have the deleteStock method... so just add "implements SomeViewHandlers" to it. Then you need to give to the display that interface (generally in the constructor): display.setViewHandlers(this); Then in the presenter lease the method as: private void addStock(JsArray<Stock> stocks) { display.addStock(stocks); } And in the view copyPaste the code of the method and change this: removeButton.addClickHandler(new ClickHandler() { @Override public void onClick(ClickEvent event) { *viewHandlers.*deleteStock(code); } });
